I'm excessively suspicious, so take what I say with that in mind. The lock is definitely a Siler lock, although the exterior is fairly well done and has been modded to look more correct. What I find a bit odd is that the internal parts were all aged; why? They're obviously Siler components and no effort was made to mask that fact, so why age them? Once I see that work has been done on a piece, I immediately begin to wonder what else may have been done. Nevertheless it is a really graceful, well shaped fowler and looks very appealing.